Tried one of the Kimber ones on my SR1911 and it was a no-go, however, other member's on the 1911 index have indicated they had luck with these. Bought it form Midway, and asked if I could return it, and am getting full credit, so KUDOs to Midway for being an upstanding company!
Slide fit, but once the barrel was installed, there were issues with clearance between frame, barrel and slide, and the take down lever hole would have had to been modified.